Prefatory means forming a preface: the remarks, notes, or pages that come before the real start of a book, a speech, or a paper. Prefatory remarks are the few words you say first to get people ready.

Prefatory means意思是 forming a preface構成一篇序言：the remarks, notes, or pages that come before the real start of a book, a speech, or a paper也就是放在一本書、一場演講、或一篇論文正式開始之前的那些話、筆記或頁面。Prefatory remarks序言式的話 are就是 the few words you say first to get people ready你先講來讓大家準備好的那幾句話。

It is a bookish, academic word; ordinary people say introductory, or just “a few words first.” Though actually, English borrowed prefatory from Latin. It did not grow inside English from the word preface — they are cousins, sharing an old Latin idea of “saying something beforehand,” but one is not made from the other.

It is它是 a bookish, academic word一個書面、學術味很重的字；ordinary people say一般人會說 introductoryintroductory，or或者 just "a few words first."就說「先講幾句話」。Though actually不過事實上，English borrowed prefatory from Latin這個字是英文從拉丁文借來的。It did not grow inside English from the word preface它不是英文內部從preface這個字長出來的，they are cousins它們是表親關係， sharing an old Latin idea of "saying something beforehand,"共享一個拉丁文「事先說」的古老概念，but不過 one is not made from the other兩者不是誰生出誰的關係。

It is easy to mix with preparatory (getting ready for something later), which is a different family.

It is它 easy to mix with很容易跟 preparatory (getting ready for something later)preparatory（也就是為以後的事先做準備）搞混，which is a different family但那其實是不同家族的字。